Despite our prectautions to oomnrvsiato for varying crews,, an arror 
mest ha  ve -rept In. 1eon, In Jamatry 1939#, mae a stia of experlifintal

drives to explore this error, Ho1,A tlushe 4 
 
1I910                      75, 
I jP0          10              75                      142~ 
1125           70              93 
1127           72              1z                      = 
10 =nn flusho4- ~              1   esthan 70 ame        19% lesi than 70
zM 
Since the error to not Preat, an~i we used no i~rew am- ller than 15 men

 
for a#iitual census, no correc-tion- for size of crew is isade, 
We3 do not regarl the census ns a precise ne&4sremnt. It Is itsed in

this papiTer only to !omuf. tane untran"3, resilue of the prvmllatlon.

It io ouir belief that the actual pomal-Aton - s pr'obably never less 
than the census tall!, bnt may hcave exc~pef!e It. 
L~a.Lz.About 16 trapsq were oreratpl 1'ro~n Wbv&iwber thiro,rh Ap.rl,

The tvra were visited two or three times a I.-r when in operation. Thirizag

storms, andr freq-ttently at other tiAs, the tran~s eore rropne~i opend-

used as feelinz s!tqtions,  The trans weriroee       d orates with bobuwire

antruc  (si, P.,79)  orn ,as ised as bait,  The, wire roof ws thatm-hel 
with veg-etattior to reduceo scalving 
Tarin,,  t he f-irst fouir winter, the trarned  birns were ts. .en insas

to - hea0irtreimldng fo)r w0ighinp and l         d~    hetur rple.if t-t
the 
ro,it of rca ntiire Aurnn, the next rnuzw' of the tra,L,  Tis involve' honlir

the -J(ll9 0to orer nig-ht, for thie las t rouind wa-s male at ti toaid 
ovmrnitrht q-roiiirn.  rhrin:' the fifth winter scales3 and han~ ine qirc

weore carried4 to thp trops, ,n,4 te 1l1rds reloeeued in the 9"ot.